Kazuko Sawamatsu (Japanese: 沢松和子, born 5 January 1951) is a retired tennis player from Japan.

She competed in a number of major LTA tournaments in the 1970s on the world circuit.

She also reached the semifinals of the Australian Open in 1973, and won the 1975 Wimbledon ladies doubles title with partner Ann Kiyomura.

In November 1975, she won the singles title at the Japan Open Tennis Championships, defeating Kiyomura in the final in three sets, and together they won the doubles title.

This biographical article relating to Japanese tennis is a stub.